I was using an S21+ on T-Mobile using Wi-Fi calling preferred for over a year very successfully. I purchased an S22 Ultra and turned on Wi-Fi preferred. Here is what I’ve experienced. In about 65% of my calls the first 5 seconds to a minute are VERY, V--E---R---Y S---L---O--W. Speech is slowed down very significantly and shifted dramatically to the base side. This makes interacting with commercial phone response systems difficult to impossible. This happens even calling T-Mobile 611/customer service. After this first period wi-fil calling seems to settle down and work correctly. IF you can get past the problem portion of the call. Again, this problem NEVER happened with the S21. I don’t know if this is a Samsung issue or a T-Mobile issue. If this happens to you please report it and request a trouble ticket number. If enough people report it maybe the problem will be corrected.
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